Fix eslint mistakes.

Author: darabos

src/plots/cartesian/axes.js

@@ -2040,18 +2040,18 @@ axes.doTicks = function(gd, axid, skipTitle) {
         // How much to shift a multi-line label to center it vertically.
         function getAnchorHeight(lineCount, lineHeight, angle) {
             var h = (lineCount - 1) * lineHeight;
-            if (axLetter === 'x') {
-                if (angle < -20 || 20 < angle) {
+            if(axLetter === 'x') {
+                if(angle < -20 || 20 < angle) {
                     return -0.5 * h;
-                } else if (axside === 'top') {
+                } else if(axside === 'top') {
                     return -h;
                 }
             } else {
                 angle *= axside === 'left' ? 1 : -1;
-                if (angle < -20) {
+                if(angle < -20) {
                     return -h;
-                } else if (angle < 20) {
-                  return -0.5 * h;
+                } else if(angle < 20) {
+                    return -0.5 * h;
                 }
             }
             return 0;
@@ -2071,8 +2071,8 @@ axes.doTicks = function(gd, axid, skipTitle) {
                     svgTextUtils.lineCount(thisLabel),
                     LINE_SPACING * d.fontSize,
                     isNumeric(angle) ? +angle : 0);
-                if (anchorHeight) {
-                  transform += ' translate(0, ' + anchorHeight + ')';
+                if(anchorHeight) {
+                    transform += ' translate(0, ' + anchorHeight + ')';
                 }
                 if(mathjaxGroup.empty()) {
                     thisLabel.select('text').attr({